PROBOSCINA. 
23 
Prohoscina angustata, Stoliczka, 1873. Pal. Ind. : Cret. Fauna S. Ind. voL iv. 
pt. 2, p. 31, pi. iii. figs. 7, 8. 
„ „ Marsson, 1887. Pry. Riig. : Pal. Abh. vol. iv. pt. 1 
p. 14. 
? ,, „ Tine, 1890. Greensd. Polyz. : Proc. Yorks. Geol. Soc. vol. xi. 
p. 265. 
Stomatopora 
Vine, 1890. Bry. Red Chalk: Quart. Journ. Geol. Soc. 
vol. xlvi. p. 467, pi. xix. fig. 1. 
Pergens, 1890. Revision, p. 331. 
„ „ Pergens, 1895. Bry. Cachemb. ; Bull. Soc. beige Geol. 
vol. viii. p. 181. 
»» >» Canu, 1898. Bry. St. Cal.: Bull. Soc. geol. France, ser. 3, 
vol. XXV. p. 742. 
Diattopora {Idmonea) angustata, Boll, 1853. Mekl. dil. Kreidever. : Arch. Ver. 
Xaturg. Meckl. vol. vii. p. 83. 
Idmonea rugosa, d’Orbigny, 1851. Bry. Cret. pi. 633, figs. 4-7. 
d’Orbigny, 1854. Ihid. p. 853. 
Vine, 1891. Pol. Red Chalk : Proc. Yorks. Geol. Soc. 
vol. xi. p. 375. 
Vine, 1893. Cret. Pol.: Rep. Brit. Assoc. 1892, p. 328. 
Vine, 1890. Bry. Red Chalk: Quart. Journ. Geol. Soc. 
vol. xlvi. p. 468. 
non „ angustata, Vine, 1891. Polyz. Red Chalk: Proc. Yorks. Geol. Soc. 
vol. xi. p. 375. 
)» M Vine, 1893. Cret. Pol.: Rep. Brit. Assoc. 1892, p. 328. 
,, intermedia, 1877. Bry. bohm. Kr. : Denk. Akad. Wiss. Wien, 
vol. xxxvii. pt. 2, p. 102, pi. v. figs. 1-13. 
Stomatopora ,, Pocta, 1892. Mech. Koryc. Hory : Ceska Akad. Fr. Jos. 
Praze, sect. ii. p. 13, pi. i. fig. 24. 
Prohoscina 
? 
? 
Diagnosis. 
Zoarium of long narrow branches, which usually subdivide 
dichotomously ; the branches rarely anastomose. The branches 
consist at first of a single series of zooecia; but sometimes 
after the third zooecion the branches are biserial ; nearer 
the ends of the branches they may be triserial, while in 
places four zooecia may be crowded into a single width. 
The width of the branches is fairly uniform. Zooecia long, 
and generally somewhat sinuous. The separate zooecia are 
sharply marked off from one another, and they are visible 
throughout their length. The walls of the zooecia are 
granulate, and sometimes marked by faint transverse corruga- 
tions or striations. 
Peristomes well raised. 
Gonoecium simple, clavate, with minute aperture {^jide Pocta). 
